package com.bdqn.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.io.PrintWriter;

public class AuthorizationInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler) throws Exception{
        if (request.getSession().getAttribute("loginUser")==null){
            response.setContentType("text/html;charset=UTF-8");
            PrintWriter out =response.getWriter();
            out.print("<script>alert('请先进行登录，再进行后续操作!(Interceptor 控制)');location.href='" + request.getContextPath() + "/login';</script>");
            return false;
        }else {
            return true;
        }
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView){}

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)throws Exception{}
}
